<script>
/* eslint react/no-multi-comp:0, no-console:0, no-unused-vars:0 */

import '../assets/index.less';
import PropTypes from '@/components/_util/vue-types';
import Calendar from '../';
import DatePicker from '../src/Picker';
import zhCN from '../src/locale/zh_CN';
import enUS from '../src/locale/en_US';
import '../../vc-time-picker/assets/index.less';
import TimePickerPanel from '../../vc-time-picker/Panel';
import BaseMixin from '@/components/_util/BaseMixin';

import moment from 'moment';
import 'moment/locale/zh-cn';
import 'moment/locale/en-gb';

const format = 'YYYY-MM-DD HH:mm:ss';
const cn = window.location.search.indexOf('cn') !== -1;
const now = moment();
if (cn) {
  now.locale('zh-cn').utcOffset(8);
} else {
  now.locale('en-gb').utcOffset(0);
}

function getFormat (time) {
  return time ? format : 'YYYY-MM-DD';
}

const defaultCalendarValue = now.clone();
defaultCalendarValue.add(-1, 'month');

const timePickerElement = (h) => <TimePickerPanel defaultValue={moment('00:00:00', 'HH:mm:ss')} />;

function disabledTime (date) {
  console.log('disabledTime', date);
  if (date && (date.date() === 15)) {
    return {
      disabledHours () {
        return [3, 4];
      },
    };
  }
  return {
    disabledHours () {
      return [1, 2];
    },
  };
}

function disabledDate (current) {
  if (!current) {
    // allow empty select
    return false;
  }
  const date = moment();
  date.hour(0);
  date.minute(0);
  date.second(0);
  return current.valueOf() < date.valueOf(); // can not select days before today
}

const Demo = {
  props: {
    defaultValue: PropTypes.object,
    defaultCalendarValue: PropTypes.object,
  },
  mixins: [BaseMixin],
  data () {
    return {
      showTime: true,
      showDateInput: true,
      disabled: false,
      value: this.defaultValue,
    };
  },
  methods: {
    onChange (value) {
      console.log('DatePicker change: ', (value && value.format(format)));
      this.setState({
        value,
      });
    },

    onShowTimeChange (e) {
      this.setState({
        showTime: e.target.checked,
      });
    },

    onShowDateInputChange  (e) {
      this.setState({
        showDateInput: e.target.checked,
      });
    },

    toggleDisabled  () {
      this.setState({
        disabled: !this.disabled,
      });
    },
  },

  render (h) {
    const state = this.$data;
    const calendar = (<Calendar
      locale={cn ? zhCN : enUS}
      style={{ zIndex: 1000 }}
      dateInputPlaceholder='please input'
      formatter={getFormat(state.showTime)}
      disabledTime={state.showTime ? disabledTime : null}
      timePicker={state.showTime ? timePickerElement(h) : null}
      defaultValue={this.defaultCalendarValue}
      showDateInput={state.showDateInput}
      disabledDate={disabledDate}
    />);
    return (<div style={{ width: '400px', margin: '20px' }}>
      <div style={{ marginBottom: '10px' }}>
        <label>
          <input
            type='checkbox'
            checked={state.showTime}
            onChange={this.onShowTimeChange}
          />
          showTime
        </label>
        &nbsp;&nbsp;&nbsp;&nbsp;
        <label>
          <input
            type='checkbox'
            checked={state.showDateInput}
            onChange={this.onShowDateInputChange}
          />
          showDateInput
        </label>
        &nbsp;&nbsp;&nbsp;&nbsp;
        <label>
          <input
            checked={state.disabled}
            onChange={this.toggleDisabled}
            type='checkbox'
          />
          disabled
        </label>
      </div>
      <div style={{
        boxSizing: 'border-box',
        position: 'relative',
        display: 'block',
        lineHeight: 1.5,
        marginBottom: '22px',
      }}
      >
        <DatePicker
          animation='slide-up'
          disabled={state.disabled}
          calendar={calendar}
          value={state.value}
          onChange={this.onChange}
          scopedSlots={{
            default: ({ value }) => {
              return (
                <span tabIndex='0'>
                  <input
                    placeholder='please select'
                    style={{ width: '250px' }}
                    disabled={state.disabled}
                    readOnly
                    tabIndex='-1'
                    class='ant-calendar-picker-input ant-input'
                    value={value && value.format(getFormat(state.showTime)) || ''}
                  />
                </span>
              );
            },
          }}
        >
        </DatePicker>
      </div>
    </div>);
  },
};

const multiFormats = ['DD/MM/YYYY', 'DD/MM/YY', 'DDMMYY', 'D/M/YY'];

const DemoMultiFormat = {
  data: () => ({
    value: now,
  }),
  methods: {
    onChange (value) {
      console.log('Calendar change: ', (value && value.format(format)));
      this.value = value;
    },
  },

  render () {
    const state = this.$data;
    return (<div style={{ width: '400px', margin: '20px' }}>
      <div style={{ marginBottom: '10px' }}>
        Accepts multiple input formats
        <br/>
        <small>{multiFormats.join(', ')}</small>
      </div>
      <Calendar
        locale={cn ? zhCN : enUS}
        style={{ zIndex: 1000 }}
        dateInputPlaceholder='please input'
        format={multiFormats}
        value={state.value}
        onChange={this.onChange}
      />
    </div>);
  },
};

function onStandaloneSelect (value) {
  console.log('onStandaloneSelect');
  console.log(value && value.format(format));
}

function onStandaloneChange (value) {
  console.log('onStandaloneChange');
  console.log(value && value.format(format));
}

export default {
  render (h) {
    return (
      <div
        style={{
          zIndex: 1000,
          position: 'relative',
          width: '900px',
          margin: '20px auto',
        }}
      >
        <div>
          <div style={{ margin: '10px' }}>
            <Calendar
              showWeekNumber={false}
              locale={cn ? zhCN : enUS}
              defaultValue={now}
              disabledTime={disabledTime}
              showToday
              format={getFormat(true)}
              showOk={false}
              timePicker={timePickerElement(h)}
              onChange={onStandaloneChange}
              disabledDate={disabledDate}
              onSelect={onStandaloneSelect}
              renderFooter={() => 'extra footer'}
            />
          </div>
          <div style={{ float: 'left', width: '300px' }}>
            <Demo defaultValue={now} />
          </div>
          <div style={{ float: 'right', width: '300px' }}>
            <Demo defaultCalendarValue={defaultCalendarValue} />
          </div>
          <div style={{ clear: 'both' }}></div>
          <div>
            <DemoMultiFormat />
          </div>
        </div>
      </div>
    );
  },
};

</script>
